Adsorption Kinetics and Thermodynamics of Methyl Orange on Ethylenediamine-Modified Chitosan Magnetic Nano-Adsorbent

摘要：

　　Ethylenediamine-modified chitosan magnetic nano-adsorbent (EMCN) was prepared and used for the sorption of methyl orange(MO).The kinetics of the sorption fitted well with the pseudo-second-order kinetics model.The activation energy of sorption (Ea) was determined to be 16.47 kJ.mol-1.Adsorption isotherms showed that the sorption process was consistent with both Langrnuir and Freundlich isotherm,and the thermodynamic parameters were calculated and indicated that the sorption process was spontaneous and exothermic.The saturated sorption capacity is 247.66,227.58,214.19 mg.g-1 at 5℃,25℃,45℃ (pH=5.6),respectively.

关键词： Chitosan Magnetic nano-adsorbent Thermodynamics Kinetics

作者: Yu Hong CHEN Si Qian HU

作者单位: School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, P.R.China

会议类型: 国际会议

会议名称: 2012 International Conference on Chemical Engineering,Metallurgical Engineering and Metallic Materials(2012化工、冶金和金属材料国际会议(CMMM2012))

会议地点: 昆明

会议语种:英文

页码: 273-276

在线出版日期: 2012-10-12（万方平台首次上网日期，不代表论文的发表时间）